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1901. 2020-03-05T19:28:17Z. 2021-07-02T03:01:24Z. Geological Survey (U.S.). U.S. Geological Survey. English. cartographic image. Public. California, Grass Valley Region, Nevada County, Grass Valley Region (Calif.), Grass Valley Region., and Nevada County.
1900. 2002-06-01T04:00:00Z. 2021-06-25T21:32:58Z. California State Mining Bureau. State Mining Bureau. English. Public. California, Nevada County, and Nevada County (Calif.).
1995. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Information Services. English. Public. California, Placer County, and Nevada County.
1897. 2008-01-31T14:50:02Z. 2011-03-29T00:23:56Z. Uren, Charles E. (Charles Edwin). Rand, McNally & Co., engravers. English. Public. California, Grass Valley Region, Nevada City Region, Nevada County, Nevada City Region (Calif.), Grass Valley Region (Calif.), Nevada City Mining District (Calif.), and Grass Valley Mining District (Calif.).
1896. 2013-03-13T14:54:40Z. 2021-09-28T17:54:39Z. Lindgren, Waldemar, 1860-1939. Engraved and printed by the U.S. Geological Survey, Bailey Willis, Editor of Geologic Maps, S.J. Kübel, Chief Engraver. English. Public. California and Nevada County.
1893. 2020-03-12T18:09:48Z. 2020-03-12T18:09:48Z. Geological Survey (U.S.). Department of the Interior, U.S. Geological surcey. English. cartographic image. Public. California, Nevada County, and Nevada County.